| 非刚体地球的受迫章动奥波策项和倾斜模 |
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| 引用本文： | 夏一飞,萧耐园.非刚体地球的受迫章动奥波策项和倾斜模[J].天文学报,2000,41(3):300-305. |
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| 作者姓名： | 夏一飞 萧耐园 |
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| 作者单位： | 南京大学天文系,南京210093 |
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| 基金项目： | 国家九五自然科学基金重点项目(19833010) |
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| 摘 要： | 讨论了非刚体地球受迫章动奥波策项与简正模表达式中倾斜模的关系。结果表明天球历书极章动中倾斜振项对应于角动量极的章动，在球历书极章动与角动量极的章动奥波策项之和。同时还给出了岁差速率与自转极的章动奥波策项间的数学关系。
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| 关 键 词： | 章动 奥波策项 倾斜模 岁差速率 非刚体地球 |
| 修稿时间： | 1999-11-15 |
OPPOLZER TERMS AND TILT-OVER-MODE FOR THE FORCED NUTATIONS OF A NON-RIGID EARTH |
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| XIA Yi-Fei,XIAO Nai-Yuan.OPPOLZER TERMS AND TILT-OVER-MODE FOR THE FORCED NUTATIONS OF A NON-RIGID EARTH[J].Acta Astronomica Sinica,2000,41(3):300-305. |
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| Authors: | XIA Yi-Fei XIAO Nai-Yuan |
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| Institution: | XIA Yi-Fei
,XIAO Nai-Yuan
;(Department of Astronomy, Nanjing University, Nanjing 210093) |
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| Abstract: | The relation between the Tilt Over Mode in the computation of forced nutations and the Oppolzer terms used to express the nutation terms of different axes is investigated in this paper. It is shown that for a non rigid Earth in the normal mode expansion of the nutations of the CEP, the part containing the TOM resonance corresponds to the nutations of the angular momentum axis, and the purely diurnal resonance term is the sum of the nutation of the CEP and the Oppolzer term of the angular momentum axis. Moreover, the mathematical relation between precession rate of the CEP and the Oppolzer terms for the instantaneous Earth's rotation axis is presented. |
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| Keywords: | nutation Oppolzer term Tilt-Over-Mode precession rate |
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